I honestly can't remember a fight where you can say he clearly lost during his time here.
Brashear was an excellent fighter, though quite a few people on these boards had no love for his fighting style. If he did not get a favorable grip on his opponent at the beginning of the fight, he would tie them up, get them in close with his exceptional strength, and take the tie. "Huggy Bear" was his nickname, and it was well deserved, but he rarely lost, and was pretty effective imo. He could play a regular shift, which unfortunately is rare these days for that kind of player. Hopefully they'll find another one like him some day.
To me the league missed a perfect opportunity to make an example of a nonfactor player. Suspending Erskine 8-10 games would've sent the message the league needs to send while at the same time not hurting itself from a marketing perspective by suspending a player of consequence (sorry Erskine...not really).
If Shanahan was really serious about the head contact stuff, he missed a great chance to make an example out of someone and drop the hammer. Erskine isn't a star and it was blatant. Hell, he could have even let it be known that player history is irrelevant when it comes to head shots, as Erskine has never been suspended.